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Calcimator

Crease Pattern Analyzer Calculator

Flat-foldability check from crease pattern.

Inputs

Results

Maekawa's theorem (1=pass)

1

Kawasaki's check (1=pass)

1

Flat-foldable (1=yes)1
|Mountain - Valley|2
Total folds at vertex6
Estimated center layers16
Max thickness (mm)4.91
Crease density (per cm²)0.09
Simple Fold Thickness104,857.6
How to Use This Calculator
  1. Count the mountain folds (convex ridges) meeting at the vertex you are analyzing and enter the number.
  2. Count the valley folds (concave grooves) at the same vertex and enter that number.
  3. Enter the total number of crease lines across the entire crease pattern.
  4. Enter the paper thickness in millimeters (standard kami is ~0.06–0.08 mm; copy paper ~0.10 mm).
  5. Check the Maekawa pass (1 = pass) — the absolute difference between mountain and valley folds must equal 2.
  6. Check the Kawasaki pass and the flat-foldable result to confirm whether the pattern can lie flat.
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